Carter thermos mug with sliding lid 47 cl from Fellow is made of 18/8 stainless steel and has a BPA-free plastic lid. The uniquely angled lid slides open easily with a thumb press for quick coffee breaks and then smoothly closes to keep the heat and flavor intact. With its double wall insulation, it keeps beverages hot or cold for up to 6 hours. The slim design fits perfectly in the car’s cup holder and is compatible with your favorite pour-over.